Taxonomy:	Eukaryota \| Opisthokonta \| Metazoa \| Eumetazoa \| Bilateria \| Protostomia \| Ecdysozoa \| Nematoda \| Chromadorea \| Strongylida \| Trichostrongyloidea \| Haemonchidae \| Ostertagia
		Go to NCBI Taxonomy (6317)
		Encyclopedia of life
		Wikipedia